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TANIMBUCA (Buchenavia huberi)
Trade Name
Tanimbuca
Scientific Name
Buchenavia huberi Ducke
Family
COMBRETACEAE
Common Names
Tanimbuca (Brazil)
Scientific Name Synonyms
Buchenavia grandis Ducke
Description Of The Tree
Botanical Description
The commercial lengths are reported to vary from 8 to 19 m, with a diameter of 60 cm in the average. The logs are straight and cylindrical, with buttresses up to 4 m tall.
Natural Distribution
B. huberi is found in the Brazilian Amazonia, it is reported in the Tapajos National Forest in the Para state.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 150 to 200 micras (medium). Occasionally tyloses common. Vestured pits. Vessels per mm2 10 to 20 (abundant). Vessels per mm2 less than 6 (rare). Simple perf Occasionally axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma confluent. Prismatic crystals in non-chambered axial parenchyma cells. Styloids and/or Rays more than 10 per mm (abundant). Rays exclusively uniseriate. Crystal sand in ray cells. Prismatic crystals in the ray cells. Prismatic crystals in the ray cells. Occasionally heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumb Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
It has a mild scent while green, but it disappears after drying.
Color
Heartwood and sapwood are indistinct. The wood is light brown to yellowish brown.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
The wood grain is straight to interlocked.
Texture
This species is reported to have a fine to medium texture.
Luster
The wood is described as moderate in luster.
Natural Durability
It is rated as moderately resistant against fungi, but highly resistant against termites. It has low resistance to marine borers.
Natural durability index (1= Very high durability, 7=Vey low durability)
3
Resistance To Impregnation
The heartwood and sapwood are moderately easy to preserve, with irregular penetration.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.79
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.90
Total shrinkage Tangential (Saturated to 0%MC) (%)
9.1
Total shrinkage Radial (Saturated to 0%MC) (%)
6.0
Drying Defects
Ease of Drying: It is reported to dry rapidly. Drying Defects: Slight risk of cupping, twisting and checking. Casehardening is also reported. Kiln Schedules: Slow drying recommended.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.5
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1580
Stiffness (MOE) 12%MC (kgf/cm²)
156000
Compression parallel to fiber 12%MC (kgf/cm²)
853
Shear strength radial 12%MC (kgf/cm²)
167
Janka hardness (side) 12%MC (kgf)
1186
Janka hardness (end grain) 12%MC (kgf)
1358
Workability
Sawing
Wood of this species is difficult to cut.
Planing
It is difficult to plane and it gives a fair surface finishing.
Turning
30
Boring
It has an excellent finishing in boring.
Sanding
It is reported to have excellent results.
Finishing
Finishing behavior is fair.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, flooring, PLYWOOD AND VENEER, Decorative veneer, TURNING, TOOLS, tool handles
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Decorative veneer
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Turning
- 30 - Embassy of Honduras in Japan
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
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